Senior/Staff Platform Engineer

The role

You will lead complex, cross-team initiatives to shape the cloud and delivery foundations behind NodeZero. You will design and evolve AWS, Kubernetes/EKS, and shared platform services while improving developer workflows and platform reliability.

What you will do

• Lead the design and evolution of AWS, Kubernetes/EKS, and shared platform services.
• Define architecture for infrastructure automation, service delivery, regional capabilities, and ephemeral environments.
• Build reusable platform capabilities, self-service workflows, and release-safety practices.
• Evolve infrastructure-as-code and declarative approaches.
• Improve platform reliability, observability, security, performance, and operability.
• Participate in on-call and incident response.
• Drive high-impact initiatives across multiple teams.
• Establish platform standards and reduce technical debt.
• Partner with feature teams to turn platform needs into durable solutions.
• Mentor engineers and raise the technical bar across Engineering.

Required qualifications

• 8+ years in platform engineering, infrastructure engineering, SRE, DevOps, or software engineering with substantial production-platform ownership.
• Deep experience designing and operating cloud platforms, preferably AWS.
• Strong Kubernetes experience, including production operations, networking, reliability, and troubleshooting.
• Strong infrastructure-as-code and automation experience with Terraform, Crossplane, or comparable tools.
• Experience operating CI/CD and delivery infrastructure.
• Strong understanding of IAM, secrets, networking, ingress, and least privilege.
• Experience with distributed-systems observability and operational practices.
• Proficiency in Go and Python for platform services, developer tooling, or automation.
• Demonstrated success leading complex initiatives across multiple teams.
• Excellent communication, mentoring, and technical-influence skills.

Nice to have

• Multi-region or multi-environment SaaS platform experience.
• Internal developer platform, declarative API, or Platform-as-a-Service experience.
• GitLab CI/CD, self-hosted runners, OpenTelemetry, or Datadog experience.
• Ephemeral-environment, automated-provisioning, or platform-lifecycle experience.
• Security-sensitive, regulated, or cybersecurity experience.
• Startup or high-growth company experience.

Benefits

• Equity package in the form of stock options
• Health, vision & dental insurance for you and your family
• Flexible vacation policy
• Generous parental leave

About the company

Horizon3 is a fast-growing, remote cybersecurity company dedicated to the mission of enabling organizations to proactively find and fix and verify exploitable attack vectors before criminals exploit them.